Autofac - keyed registration and IIndex dependencies.

BootstrapIoC.cs

public class BootstrapIoC
{
	public BootstrapIoC ()
	{
	}
	
	public IContainer Build()
	{
		var builder = new ContainerBuilder();
		
		builder
			.RegisterType<Cache>()
			.Keyed<ECacheType>(ECacheType.Thumb)
			.As<ICache>()
			.InstancePerLifetimeScope();
		
		builder
			.RegisterType<Cache>()
			.Keyed<ECacheType>(ECacheType.Image)
			.As<ICache>()
			.InstancePerLifetimeScope();
		
		builder
			.RegisterType<ImageBrowser>()
			.AsSelf()
			.InstancePerLifetimeScope();
			
		return builder.Build();
	}
}

ImageBrowser.cs

public class ImageBrowser
{
	public virtual ICache ThumbCache
	{
		get;
		private set;
	}
	
	public virtual ICache ImageCache
	{
		get;
		private set;
	}
	
	public ImageBrowser(IIndex<ECacheType, ICache> caches)
	{
		ThumbCache = caches[ECacheType.Thumb];
		ImageCache = caches[ECacheType.Image];
	}
}